** Summary changed: - since Linux kernel 6.5.0-14 external monitors are no longer detected + [amdgpu] since Linux kernel 6.5.0-14 external monitors are no longer detected
** Tags added: amdgpu -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2049927 Title: [amdgpu] since Linux kernel 6.5.0-14 external monitors are no longer detected Status in linux package in Ubuntu: Confirmed Bug description: on my Lenovo ThinkPad P14s gen 4, external monitors are no longer detected since installing 6.5.0-14. Neither USB-C nor HDMI work. hwinfo and the "Displays" util don't show any additional monitors, only the built-in one. Charging through the monitor does work. also, the built-in USB hub of the monitor works. I have tried with 2 external monitors (both ultra-wide, one Dell, one Samsung) Going back to 6.5.0-13 fixes everything. Let me know if there's any way I can help troubleshoot this. ProblemType: Bug DistroRelease: Ubuntu 23.10 Package: linux-image-6.5.0-14-generic 6.5.0-14.14 ProcVersionSignature: Ubuntu 6.5.0-14.14-generic 6.5.3 Uname: Linux 6.5.0-14-generic x86_64 ApportVersion: 2.27.0-0ubuntu5 Architecture: amd64 CRDA: N/A CasperMD5CheckResult: pass CurrentDesktop: ubuntu:GNOME Date: Fri Jan 19 17:17:54 2024 InstallationDate: Installed on 2023-11-16 (64 days ago) InstallationMedia: Ubuntu 23.10.1 "Mantic Minotaur" - Release amd64 (20231016.1) MachineType: {report['dmi.sys.vendor']} {report['dmi.product.name']} ProcEnviron: LANG=en_US.UTF-8 PATH=(custom, no user) SHELL=/bin/bash TERM=xterm-256color XDG_RUNTIME_DIR=<set> ProcFB: 0 EFI VGA ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-6.5.0-14-generic root=/dev/mapper/ubuntu--vg-ubuntu--lv ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-6.5.0-14-generic N/A linux-backports-modules-6.5.0-14-generic N/A linux-firmware 20230919.git3672ccab-0ubuntu2.5 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 10/24/2023 dmi.bios.release: 1.16 dmi.bios.vendor: LENOVO dmi.bios.version: R2FET36W (1.16 ) dmi.board.asset.tag: Not Available dmi.board.name: 21K5CTO1WW dmi.board.vendor: LENOVO dmi.board.version: Not Defined dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.ec.firmware.release: 1.11 dmi.modalias: dmi:bvnLENOVO:bvrR2FET36W(1.16):bd10/24/2023:br1.16:efr1.11:svnLENOVO:pn21K5CTO1WW:pvrThinkPadP14sGen4:rvnLENOVO:rn21K5CTO1WW:rvrNotDefined:cvnLENOVO:ct10:cvrNone:skuLENOVO_MT_21K5_BU_Think_FM_ThinkPadP14sGen4: dmi.product.family: ThinkPad P14s Gen 4 dmi.product.name: 21K5CTO1WW dmi.product.sku: LENOVO_MT_21K5_BU_Think_FM_ThinkPad P14s Gen 4 dmi.product.version: ThinkPad P14s Gen 4 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2049927/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
